code: def _to_hhmmss(self, sec):
      m, s = divmod(sec, 60)
      h, m = divmod(m, 60)
      return "%d:%02d:%02d" % (h, m, s)
  
file_path: mlxtend/mlxtend/_base/_iterative_model.py
imports: from sys import stderr
  from time import time
  import numpy
label_desc: Use image node_id 4 for calling the _IterativeModel obj's underlying member method code with example usage: obj._to_hhmmss(sec) and returns: unknown